The ToString command converts the given expression to a string that has some characters encoded.  The result is a string that is suitable for use by the parse command in order to get the given expression back. More importantly, the result is usable by the Maple T.A. built-in "maple" command used in writing question algorithms.

If the sequence option is set to true and the given expression is a sequence of more than one item, then a sequence of strings is returned. This sequence is suitable for use with the "switch" command in Maple T.A.

If the dotm option is set to true, then the output will not be human readable. However, the output will have more state information, such as assigned values of named procedures among other things.

$\mathrm{expr}≔\left[\left[1\,2\,3\right]\,''a\; string''\,\right]$

$\mathrm{expr}≔\left[\left[1\,2\,3\right]\,''a\; string''\,\mathrm{\$X}\right]$

$s≔\mathrm{MapleTA}:-\mathrm{ToString}\left(\mathrm{expr}\right)$

$s≔''[[1,\; 2,\; 3],\; \backslash x22a\; string\backslash x22,\; `\backslash x24X`]''$

$\mathrm{expr2}≔\mathrm{parse}\left(s\,'\mathrm{statement}'\right)$

$\mathrm{expr2}≔\left[\left[1\,2\,3\right]\,''a\; string''\,\mathrm{\$X}\right]$

$\mathrm{evalb}\left(\mathrm{expr}=\mathrm{expr2}\right)$

$\mathrm{true}$

$\mathrm{MapleTA}:-\mathrm{ToString}\left(\left[1\,2\right]\,\left[3\,4\right]\,\left[5\,6\right]\,'\mathrm{sequence}'=\mathrm{true}\right)$

$''[1,\; 2]'',''[3,\; 4]'',''[5,\; 6]''$

$\mathrm{MapleTA}:-\mathrm{ToString}\left(\left[1\,2\right]\,\left[3\,4\right]\,\left[5\,6\right]\,'\mathrm{sequence}'=\mathrm{false}\right)$

$''[1,\; 2],\; [3,\; 4],\; [5,\; 6]''$

p := proc(x) x^2; end;

$p≔\mathbf{proc}\left(x\right)x\^2\mathbf{end\; proc}$

$\mathrm{s1}≔\mathrm{MapleTA}:-\mathrm{ToString}\left(p\right)$

$\mathrm{s1}≔''p''$

$\mathrm{s2}≔\mathrm{MapleTA}:-\mathrm{ToString}\left(p\,'\mathrm{dotm}'=\mathrm{true}\right)$

p := proc(x) x^3; end;

$p≔\mathbf{proc}\left(x\right)x\^3\mathbf{end\; proc}$

$p\left(3\right)$

$27$

$\mathrm{parse}\left(\mathrm{s2}\,'\mathrm{statement}'\right)$

$p$

$p\left(3\right)$

$9$

$s≔\mathrm{MapleTA}:-\mathrm{ToString}\left(\mathrm{HEIGHT}\left(''6\text{'}2\backslash "\; tall''\right)\right)$

$\mathrm{parse}\left(s\,\mathrm{statement}\right)$

$\mathrm{HEIGHT}\left(''6\text{'}2"\; tall''\right)$

The MapleTA[ToString] command was introduced in Maple 18.

For more information on Maple 18 changes, see Updates in Maple 18.